Android SoundPool播放音效详细步骤

MediaPlayer虽然也能播放音频，但是它有资源占用量较高，延迟时间较长，不支持多个音频同时播放等缺点，这些缺点决定MediaPlayer在某些场合的使用情况不会很理想，例如在对时间精准度要求相对较高的场景，而SoundPoo一般用来播放密集、急促而又短暂的音效，比如：“滴滴一下马上出发”

1.添加权限：

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />

2.动态添加权限

ActivityCompat.requestPermissions(this,
                new String[]{Manifest.permission.CAMERA,Manifest.permission.RECORD_AUDIO},
                100);

3、创建一个SoundActivity，使用Intent连接MainActivity和SoundActivity

完整代码：

MainActivity布局文件activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    
	 <Button
        android:onClick="playAudio"
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="播放音效"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/button2" />
    
</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        /**
         * 在 Android 6.0 以上需要动态添加权限
         */
        ActivityCompat.requestPermissions(this,
                new String[]{Manifest.permission.CAMERA,Manifest.permission.RECORD_AUDIO},
                100);

    }

    /**
     * 播放音效
     * @param view
     */
    public void playAudio(View view) {
        //跳转到SoundActivity完成播放音效
        startActivity(new Intent(this, SoundActivity.class));
    }
}

SoundActivity.java布局文件activity_sound.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

适配文件MyAdapter.java

package com.example.mediademo;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import java.util.List;

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> implements View.OnClickListener {

    //条目数据
    private final List<SoundActivity.Sound> data;
    private final Context context;
    private final RecyclerView recyclerView;
    private OnItemClickListener listener;

    //构造方法
    public MyAdapter(List<SoundActivity.Sound> data, RecyclerView recyclerView, Context context) {
        this.data = data;
        this.recyclerView = recyclerView;
        this.context = context;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        //定义TextView显示文本 (a4/a5/a6...)
        TextView textView = new TextView(context);
        //设置布局宽高
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        layoutParams.topMargin = 18;
        layoutParams.leftMargin = 18;
        textView.setLayoutParams(layoutParams);
        //文本字体大小
        textView.setTextSize(20);
        //设置TextView的点击事件
        textView.setOnClickListener(this);
        return new MyViewHolder(textView);
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        //拿到外面传递进来的data数据，拿到name值赋值给TextView
        ((TextView) holder.itemView).setText(data.get(position).getName());
    }

    /**
     * 条目个数
     * @return
     */
    @Override
    public int getItemCount() {
        return data.size();
    }

    /**
     * 点击事件
     * @param v
     */
    @Override
    public void onClick(View v) {
        if (listener != null) {
            listener.onItemClick(recyclerView.getChildAdapterPosition(v));
        }
    }

    public void setOnItemClickListener(OnItemClickListener listener) {
        this.listener = listener;
    }

    interface OnItemClickListener {
        void onItemClick(int position);
    }

    class MyViewHolder extends RecyclerView.ViewHolder {

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
        }
    }
}

SoundActivity.java

package com.example.mediademo;
import android.media.SoundPool;
import android.os.Bundle;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
import java.util.List;

public class SoundActivity extends AppCompatActivity implements MyAdapter.OnItemClickListener {

    //soundPool示例对象
    private SoundPool soundPool;

    //封装bean
    static class Sound {
        String name;
        int soundId;

        public Sound(String name, int soundId) {
            this.name = name;
            this.soundId = soundId;
        }

        public int getSoundId() {
            return soundId;
        }

        public String getName() {
            return name;
        }
    }

    //条目
    List<Sound> data;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sound);

        //获取RecyclerView
        RecyclerView recyclerView = findViewById(R.id.recyclerView);

        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
        linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(linearLayoutManager);

        //创建soundPool示例对象 setMaxStreams(6)有6个音频
        soundPool = new SoundPool.Builder().setMaxStreams(6).build();

        //加载播放音效 给条目塞值（本地文件：res--》raw--》a4.mp3）
        data = new ArrayList<>();
        data.add(new Sound("a4", soundPool.load(this, R.raw.a4, 1)));
        data.add(new Sound("a5", soundPool.load(this, R.raw.a5, 1)));
        data.add(new Sound("a6", soundPool.load(this, R.raw.a6, 1)));
        data.add(new Sound("a7", soundPool.load(this, R.raw.a7, 1)));
        data.add(new Sound("a8", soundPool.load(this, R.raw.a8, 1)));
        data.add(new Sound("a9", soundPool.load(this, R.raw.a9, 1)));
        //适配
        MyAdapter myAdapter = new MyAdapter(data, recyclerView, this);
        //点击事件
        myAdapter.setOnItemClickListener(this);
        //传递给RecyclerView
        recyclerView.setAdapter(myAdapter);

    }

    //点击事件（播放）
    @Override
    public void onItemClick(int position) {
        //拿到当前点击的音频
        Sound sound = data.get(position);
        //播放（参数一：SoundId | 参数二、三：音量 | 参数四：优先级 | 参数五：循环 0：不循环 1：循环2次 | 参数六：播放速度1.0正常速度）
        soundPool.play(sound.getSoundId(),
                1.0f, 1.0f, 1, 0, 1.0f);
    }

    //播放完毕（释放）
    @Override
    protected void onDestroy() {
        super.onDestroy();
        for (Sound datum : data) {
            //把音效卸载
            soundPool.unload(datum.getSoundId());
        }
        //释放soundPool
        soundPool.release();
    }
}

音效素材的简单可播放的音效即可（,mp3/.mp4）

建议使用真机测试

Android SoundPool播放音效详细步骤

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